Home / 28,011,655.52-38,656,006.94-15,621,760.58

Finding the Fourth Proportional to 28,011,655.52, 38,656,006.94 and 15,621,760.58

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Solution

The fourth proportional to 28,011,655.52, 38,656,006.94 and 15,621,760.58 is: 21,557,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011,655.52 : 38,656,006.94 = 15,621,760.58 : x
  2. Step 2: Convert to fraction form
    28,011,655.52/38,656,006.94 = 15,621,760.58/x
  3. Step 3: Cross multiply
    28,011,655.52x = 38,656,006.94 × 15,621,760.58
  4. Step 4: Simplify right side
    28,011,655.52x = 603,874,885,531,192.88
  5. Step 5: Solve for x
    x = 603,874,885,531,192.88/28,011,655.52
  6. Step 6: Final answer
    x = 21,557,986.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.